The 9 Most Complex Watches In The World

GQ looks at the three complications that are behind horology's most expensive timeless wonders

The three most precious complications – tourbillons, minute repeaters and perpetual calendars – are crafted by exceptionally skilled watchmakers, using impossibly small tools and drawing on technical knowledge that has been passed down from generation to generation for over 200 years. The following timepieces are a testament to the horologists who perfected these three complications.

Minute Repeaters- The intricate mechanisms that power these timepieces sound off the hours, quarters and minutes to the closest minute with three distinct sounds. Minute repeaters are judged and valued by the quality of their timbre.
4. Blancpain - Le brassus minute repeater carrousel
5. Girard-Perregaux - opera two
6. IWC Portuguese Grande Complication

Perpetual Calendars- Perpetual calendars use compound algorithms that, once set, determine the exact day and date perpetually, even taking into account leap years.
7. A. Lange & Söhne - Langematik perpetual
8. Jaeger-Lecoultre - master grande tradition tourbillon with perpetual calendar - A stunning work of art from JLC, this timepiece is as tasteful and classy as it is functional.
9. Vacheron Constantin - Patrimony contemporaine perpetual calendar - The calendar requires no adjustment till the year 2100.